Safeguarding Persons and Property and Promoting the Welfare of the Public: Creating the Office of Warm Air Heating etc.

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7. Grade of Fuel Oil. The grade of fuel oil used with any burner shall be one which tests and ogperience show to be suitable for use with that burner. The oil shall have a flash point not less than 11OF when tested by the Pensky- Martins Closed Cup Testing Method, and shall be free from acid, grit and fibrous or cther foreign matter likely'to clog or injure the burners or valves. S. Fuel for, Gas Pilot. The use of any fuel other than natural gas in the gas pilot of any fuel oil burner is prohibited without special permis- sion of the Department. 9. Gas. Pilot Piping. Gas pilot supply piping shall be provided with an approved shut -off valve near the pilot burner, with an approved properly vented gas pressure regulator and shall conform with Article XII on gas piping. 10. Ventilation of'Trapped Vapors. Ventilation shall be provided to pre= vent the accumulation of any trapped vapors below the combustion chamber. 11, Oil Preheaters. Preheating of oil, where necessary, shall be done by steam, hot water, or approved electric heaters. Heaters shall be substantially constructed with all joints made oil tight. ThermoW.t�: shall be installed at suitable locations to indicate the temperature of the heated oil. Heaterp shall be by- passed or provided with suitable means to prevent abnormal pressure. Mc ans shall be provided to prevent introduction of oil or other liquid harmful to boiler operation into the boiler. 12. Oil Strainers. Oil supply lines to burners shall be provided with approved strainers. SECTION 8. LICENSES REQUIRED. Except as otherwise provided in Section One (1), no person, firm or corporation shall in any manner undertake to execute or perform any work of installing, maintaining, or altering or repairing any Heating. Air Conditioning or Ventilating equipment unless such person, firm or cor- poration is the holder of a Class B Heating, air conditioning or ven- tilating Contractor's License as defined, and has a certificate therefore as provided for in Section ;dine (9) of this Ordinance; nor shall any person, firm or corporation execute or perform such work otherwise that as specifically permitted under the class of license held by such person, firm or corporation except that such provision khall not apply to any person employed by and working under the direction of a holder of a Class A Heating, Air Conditioning and Ventilating Contractor's License.. SECTION 9. CLASSES OF LICENSES.. Three (3) classes of licenses and certificates which shall be known respectively as Class A: Heating, air conditioning and ventilating dealer license; and Class C; Journey men Heating, air conditioning and ventilating employees license; and Class D Heating, air conditioning and ventilating Dealers License.. Class "A" Heating, air conditioning and ventilating Contractor's License: The holder of a Class "!_" Heating, air conditioning and ventilating Contractor dealer License shall maintain an office and have a business telephone in St. Joseph County and shall b, principally engaged in the business of Heating, air conditioning or ventilating contracting, and it shall entitle the holder, any person, firm or corporation, or their employees, to perform Heating, Air conditioning and ventilating contracting work and to sell approved Heating, Air Conditioning and Ventilating apparatus and devices. Class "C" Journeyman Heating, Air Conditioning and Ventilating Employees. A Heating, Air Conditioning and Ventilating employee's license may be issued to any individual upon a payment of a license fee of $2.00 per annum, provided that such individual shall be certified to the Controller of the City of South Bend, as an employee of a person, firm or corporation holding a Class A contractor dealer license.